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Synonyms

thickness

American  
[thik-nis] / ˈθɪk nɪs /

noun

  1. the state or quality of being thick.

  2. the measure of the smallest dimension of a solid figure.

    a board of two-inch thickness.

  3. the thick part or body of something.

    the thickness of the leg.

  4. a layer, stratum, or ply.

    three thicknesses of cloth.

verb (used with object)

  1. to bring (a piece, as a board) to a uniform thickness.

thickness British  
/ ˈθɪknɪs /

noun

  1. the state or quality of being thick

  2. the dimension through an object, as opposed to length or width

  3. a layer of something

  4. a thick part

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of thickness

before 900; Middle English thiknesse, Old English thicnes. See thick, -ness

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Chicken cutlet starts with either a boneless chicken thigh or a boneless chicken breast that’s covered with cling wrap and pounded to even thickness.

From Salon • Feb. 26, 2026

"When the thickness of a tissue increases, it's hard to diffuse that tissue with what it needs, so cells start dying," Noshadi said.

From Science Daily • Feb. 22, 2026

The revision comes months after Airbus found what it described as a “supplier-quality issue” relating to the thickness of metal panels used to make its A320 line of jets.

From The Wall Street Journal • Feb. 19, 2026

More recently, priests have added temperature readings and ice thickness.

From Barron's • Feb. 15, 2026

On a lightly floured surface, roll out the dough to about ¼-inch thickness.

From "Hope Springs" by Jaime Berry

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.